A spontaneously occurred rice ( Oryza sativa L.) mutant characterized by homeotic conversions in glumes and stamens was found in the progeny of a breeding material. The mutant plant shows degenerated glumes and mor...A spontaneously occurred rice ( Oryza sativa L.) mutant characterized by homeotic conversions in glumes and stamens was found in the progeny of a breeding material. The mutant plant shows degenerated glumes and morphological transformation of stamens into pistils. A mutant floret consists of 1 to 3 completely developed pistils and 4 to 6 incomplete pistils with no ovary. Some pistilloid stamens still have filaments but tipped by bulged tissue and 0 to 3 stigmas. Three ovaries in a single floret were observed in its cross and longitudinal sections. When the mutant plants were pollinated with pollens from wild type plants, one or two naked seeds instead of a caryopsis could be produced in a single floret. The mutant is controlled by a single recessive gene since its F 1 hybrid plants were restored to wild type and 3∶1 ratio of wild type to mutant plants were observed in the progeny of heterozygotes. It seems that the mutant phenotype of the homeotic conversions in glumes and stamens is similar to that of the B loss_of_function mutants in Arabidopsis and Antirrhinum .展开更多
A new acceptor-donor-acceptor(A-D-A) type small-molecule acceptor NCBDT-4 Cl using chlorinated end groups is reported.This new-designed molecule demonstrates wide and efficient absorption ability in the range of 600–...A new acceptor-donor-acceptor(A-D-A) type small-molecule acceptor NCBDT-4 Cl using chlorinated end groups is reported.This new-designed molecule demonstrates wide and efficient absorption ability in the range of 600–900 nm with a narrow optical bandgap of 1.40 eV. The device based on PBDB-T-SF:NCBDT-4 Cl shows a power conversion efficiency(PCE) of 13.1%without any post-treatment, which represents the best result for all as-cast organic solar cells(OSCs) to date. After device optimizations, the PCE was further enhanced to over 14% with a high short-circuit current density(Jsc) of 22.35 m A cm-2 and a fill-factor(FF) of 74.3%. The improved performance was attributed to the more efficient photo-electron conversion process in the optimal device. To our knowledge, this outstanding efficiency of 14.1% with an energy loss as low as 0.55 eV is among the best results for all single-junction OSCs.展开更多
Objective: To investigate the classification and incidence of acid base disturbance (ABD) in the patients with post traumatic multiple organ dysfunction syndrome (MODS). Methods: A total of 119 patients with MODS were...Objective: To investigate the classification and incidence of acid base disturbance (ABD) in the patients with post traumatic multiple organ dysfunction syndrome (MODS). Methods: A total of 119 patients with MODS were examined with arterial blood gas analysis and serum electrolytes detection for 675 times in this study. Results: Different types of ABD existed in 647 times out of 675 times ( 95.9 %) of blood gas analyses. There were 270 times ( 41.7 %) of simple ABD, 271 times ( 41.9 %) of double ABD and 106 times ( 16.4 %) of triple ABD. Among which, 404 times ( 62.4 %) were in respiratory alkalosis (RAL), 332 times ( 51.3 %) in metabolic acidosis (MA), 227 times ( 35.1 %) in metabolic alkalosis (MAL) and 167 times ( 25.8 %) in respiratory acidosis (RA). In this study, 79 cases ( 66.4 %) out of 119 cases with MODS died from these kinds of ABD. Conclusions: It suggests that in the early stage of MODS, RAL with or without hypoxemia may exist, and later on, MA or even triple ABD may occur. In order to detect and correct the primary disorders as early as possible, it is important to keep the balance of hydrolyte. The treatment of primary diseases is also important. Disorders of acid base balance were corrected according to pH standard values, anion gap (AG) and the potential [HCO 3 -] were also calculated simultaneously. When pH was more than 7.50 or lower than 7.20 , it is necessary to give drugs of acidity or alkalinity to the patients with ABD to maintain pH value within a normal range.展开更多
Objective: To examine whether pancreatic proteolytic enzymes involve in lung injury induced by trauma/hemorrhagic shock (T/HS). Methods: Male Sprague Dawley rats received intraluminal or intravenous pancreatic serine ...Objective: To examine whether pancreatic proteolytic enzymes involve in lung injury induced by trauma/hemorrhagic shock (T/HS). Methods: Male Sprague Dawley rats received intraluminal or intravenous pancreatic serine protease inhibitor, 6 amidino 2 naphthyl p guanidinobenzoate dimethanesulfate (ANGD) during laparotomy (trauma), and were subjected to 90 minutes of T/HS or trauma sham shock (T/SS). Degree of lung injury was assessed 3 hours after resuscitation with Ringer’s lactate solution. Results: Lung permeability, pulmonary myeloperoxidase levels and the ratio of bronchoalveolar lavage fluid protein to plasma protein increased after T/HS, and significantly decreased in intraluminal ANGD treated but not in intravenous ANGD treated rats. Histological analysis demonstrated fewer injured villi in the intraluminal ANGD treated rats compared with those in the control rats. Linear regression analysis revealed that the percentage of injured ileal mucosal villi directly related to pulmonary polymorphic neutrophil sequestration and lung permeability to Evans blue dye. Conclusions: Pancreatic proteolytic enzymes in the ischemic gut may be important toxic factors contributing to lung injury after T/HS.展开更多
文摘A spontaneously occurred rice ( Oryza sativa L.) mutant characterized by homeotic conversions in glumes and stamens was found in the progeny of a breeding material. The mutant plant shows degenerated glumes and morphological transformation of stamens into pistils. A mutant floret consists of 1 to 3 completely developed pistils and 4 to 6 incomplete pistils with no ovary. Some pistilloid stamens still have filaments but tipped by bulged tissue and 0 to 3 stigmas. Three ovaries in a single floret were observed in its cross and longitudinal sections. When the mutant plants were pollinated with pollens from wild type plants, one or two naked seeds instead of a caryopsis could be produced in a single floret. The mutant is controlled by a single recessive gene since its F 1 hybrid plants were restored to wild type and 3∶1 ratio of wild type to mutant plants were observed in the progeny of heterozygotes. It seems that the mutant phenotype of the homeotic conversions in glumes and stamens is similar to that of the B loss_of_function mutants in Arabidopsis and Antirrhinum .
基金supported by the National Natural Science Foundation of China (91633301, 51773095)MoST of China (2014CB643502)+1 种基金Tianjin city (17JCJQJC44500, 17CZDJC31100)111 Project (B12015)
文摘A new acceptor-donor-acceptor(A-D-A) type small-molecule acceptor NCBDT-4 Cl using chlorinated end groups is reported.This new-designed molecule demonstrates wide and efficient absorption ability in the range of 600–900 nm with a narrow optical bandgap of 1.40 eV. The device based on PBDB-T-SF:NCBDT-4 Cl shows a power conversion efficiency(PCE) of 13.1%without any post-treatment, which represents the best result for all as-cast organic solar cells(OSCs) to date. After device optimizations, the PCE was further enhanced to over 14% with a high short-circuit current density(Jsc) of 22.35 m A cm-2 and a fill-factor(FF) of 74.3%. The improved performance was attributed to the more efficient photo-electron conversion process in the optimal device. To our knowledge, this outstanding efficiency of 14.1% with an energy loss as low as 0.55 eV is among the best results for all single-junction OSCs.
文摘Objective: To investigate the classification and incidence of acid base disturbance (ABD) in the patients with post traumatic multiple organ dysfunction syndrome (MODS). Methods: A total of 119 patients with MODS were examined with arterial blood gas analysis and serum electrolytes detection for 675 times in this study. Results: Different types of ABD existed in 647 times out of 675 times ( 95.9 %) of blood gas analyses. There were 270 times ( 41.7 %) of simple ABD, 271 times ( 41.9 %) of double ABD and 106 times ( 16.4 %) of triple ABD. Among which, 404 times ( 62.4 %) were in respiratory alkalosis (RAL), 332 times ( 51.3 %) in metabolic acidosis (MA), 227 times ( 35.1 %) in metabolic alkalosis (MAL) and 167 times ( 25.8 %) in respiratory acidosis (RA). In this study, 79 cases ( 66.4 %) out of 119 cases with MODS died from these kinds of ABD. Conclusions: It suggests that in the early stage of MODS, RAL with or without hypoxemia may exist, and later on, MA or even triple ABD may occur. In order to detect and correct the primary disorders as early as possible, it is important to keep the balance of hydrolyte. The treatment of primary diseases is also important. Disorders of acid base balance were corrected according to pH standard values, anion gap (AG) and the potential [HCO 3 -] were also calculated simultaneously. When pH was more than 7.50 or lower than 7.20 , it is necessary to give drugs of acidity or alkalinity to the patients with ABD to maintain pH value within a normal range.
文摘Objective: To examine whether pancreatic proteolytic enzymes involve in lung injury induced by trauma/hemorrhagic shock (T/HS). Methods: Male Sprague Dawley rats received intraluminal or intravenous pancreatic serine protease inhibitor, 6 amidino 2 naphthyl p guanidinobenzoate dimethanesulfate (ANGD) during laparotomy (trauma), and were subjected to 90 minutes of T/HS or trauma sham shock (T/SS). Degree of lung injury was assessed 3 hours after resuscitation with Ringer’s lactate solution. Results: Lung permeability, pulmonary myeloperoxidase levels and the ratio of bronchoalveolar lavage fluid protein to plasma protein increased after T/HS, and significantly decreased in intraluminal ANGD treated but not in intravenous ANGD treated rats. Histological analysis demonstrated fewer injured villi in the intraluminal ANGD treated rats compared with those in the control rats. Linear regression analysis revealed that the percentage of injured ileal mucosal villi directly related to pulmonary polymorphic neutrophil sequestration and lung permeability to Evans blue dye. Conclusions: Pancreatic proteolytic enzymes in the ischemic gut may be important toxic factors contributing to lung injury after T/HS.